SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the potential energy done in lifting a 50 kg barbell 6 m above the floor?
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150 J
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300 J
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1470 J
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2940 J
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Explanation:
Detailed explanation-1: -It is raised to a height of 600 cm or 6 m. To find, The potential energy of the object. So, the potential energy of the object is 2940 Joules.
Detailed explanation-2: -PE=mgh=(50Kg)(9.81ms2)(5m)=2, 452J or 2.45KJ.
Detailed explanation-3: -P. E. = m × g × h = 50 × 10 × 10 = 5000 Joule.
There is 1 question to complete.